/*
 * Copyright ConsenSys AG.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods;

import org.hyperledger.besu.ethereum.api.jsonrpc.RpcMethod;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.JsonRpcRequestContext;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcResponse;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcSuccessResponse;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.results.Quantity;
import org.hyperledger.besu.ethereum.blockcreation.MiningCoordinator;
import org.hyperledger.besu.ethereum.core.Wei;

public class EthGasPrice implements JsonRpcMethod {

  private final MiningCoordinator miningCoordinator;

  public EthGasPrice(final MiningCoordinator miningCoordinator) {
    this.miningCoordinator = miningCoordinator;
  }

  @Override
  public String getName() {
    return RpcMethod.ETH_GAS_PRICE.getMethodName();
  }

  @Override
  public JsonRpcResponse response(final JsonRpcRequestContext requestContext) {
    final Wei gasPrice;
    Object result = null;
    gasPrice = miningCoordinator.getMinTransactionGasPrice();
    if (gasPrice != null) {
      result = Quantity.create(gasPrice);
    }
    return new JsonRpcSuccessResponse(requestContext.getRequest().getId(), result);
  }
}
